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NTSB investigations: Schweizer SGS 2-33A

14 cases on aircraft the registry lists as Schweizer SGS 2-33A, where the first occurrence was “Loss of control - in flight”. Aircraft are matched to the registry by N-number and event date, checked against the reported serial number, make and model, so older matches can be wrong.

Cases per year

19832026

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Query with SQL
duckdb -csv -c "SELECT c.\"ntsbNumber\", c.\"eventDate\", c.\"eventType\", c.\"eventCity\", c.\"eventStateOrRegion\", a.n_number, a.\"aircraftMake\", a.\"aircraftModel\", c.\"highestInjuryLevel\", c.\"totalFatal\", c.\"completionStatus\", c.report_url
  FROM 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' c LEFT JOIN 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' a ON a.case_mkey = c.\"mKey\" AND a.position = 1
  WHERE c.\"mKey\" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.aircraft_model_code IN ('8051606')
      AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_occurrences.parquet' o WHERE o.case_mkey = x.case_mkey AND o.aircrafts_position = x.position AND o.\"occurrenceNumber\" = 1 AND o.\"occurrenceCode\" = 250))
  ORDER BY c.\"eventDate\" DESC, c.\"ntsbNumber\" DESC"

Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.

NTSB CHI07CA232Accident · Serious injuriesData collectionFinal reportSchweizer SGS 2-33A · Warrensburg, MOThe flight instructor's failure to maintain adequate airspeed and aircraft control, which resulted in a stall while on final approach. A factor in the accident were the two fences.Jul 26, 2007 · N33950 · Substantial damageNTSB IAD05CA148Accident · No injuriesData collectionFinal reportSchweizer SGS-2-33A · Windsor, VAThe solo student pilot's loss of control during landing.Sep 25, 2005 · N33964 · Substantial damageNTSB ATL96LA089Accident · No injuriesLimited investigationFinal reportSchweizer SGS233A · Franklinton, NCthe failure of the instructor pilot to maintain control of the aircraft.May 30, 1996 · N1197S · Substantial damageNTSB NYC96LA111Accident · Serious injuriesLimited investigationFinal reportSchweizer SGS-2-33A · Bloomingburg, NYThe pilot's failure to maintain adequate airspeed, which resulted in an inadvertent stall spin and collision with trees.May 19, 1996 · N65847 · Minor damageNTSB LAX94LA124Accident · No injuriesLimited investigationFinal reportSchweizer 2-33-A · Dillingham, HIthe pilot's failure to maintain an adequate airspeed margin while maneuvering in the traffic pattern and his inadvertent entry into a stall/mush condition.Feb 13, 1994 · N3622Z · Substantial damageNTSB LAX93LA013Accident · Minor injuriesLimited investigationFinal reportSchweizer SGS 2-33A · Warner Springs, CAThe pilot's inadequate planned approach to the runway, and, his improper use of the flight controls which resulted in an inadvertent accelerated stall/spin.Oct 17, 1992 · N1176S · Substantial damageNTSB NYC90LA082Accident · Serious injuriesLimited investigationFinal reportSchweizer S2-33A · Brookhaven, NYCause of the accident was a hard landing after the pilot stalled the glider while turning onto final approach.Mar 25, 1990 · N2055T · Minor damageNTSB NYC88LA022Accident · Serious injuriesLimited investigationFinal reportSchweizer 2-33 · Blairstown, NJAs the glider was being towed it lifted too high above the tow plane. At an altitude of about 55 to 65 feet it was disconnected. However the glider was tilting slightly to the right and as the pilot attempted to correct, it stalled and crashed.Oct 31, 1987 · N2669H · DestroyedNTSB NYC88LA014Accident · No injuriesLimited investigationFinal reportSchweizer SGS-2-33A · Mansfield, MAThe Schweizer SGS-2-33A was in the traffic pattern with a student pilot and flight instructor. In the right turn from base to final, the nose dropped and control was lost. The flight instructor took control of the aircraft, and regained control, however,…Oct 24, 1987 · N5775S · Substantial damageNTSB NYC87DFA02Accident · No injuriesFinal reportSchweizer SGS 2-33A · Wurtsboro, NYThe pilot was landing a Schweizer SGS-233 when he started to get into a pilot induced oscillation. The oscillations increased and the aircraft impacted in a nose low attitude. The pilot said the accident could have been prevented with less control input,…Nov 30, 1986 · N1222S · Substantial damageNTSB NYC86LA189Accident · No injuriesLimited investigationFinal reportSchweizer SGS-2-33A · Plymouth, MAShortly after takeoff, the tow was released from the glider when its nose started rising uncontrollably. The glider thencollided with the ground & was substantially damaged. The plt rprted the accident could have been avoided by more info &emphasis on the…Jul 22, 1986 · N33985 · Substantial damageNTSB LAX85LA003Accident · Serious injuriesLimited investigationFinal reportSchweizer SGS 2-33 · Twentynine Palm, CAWhile being towed at an alt of aprx 200 ft AGL glider was below normal tow position. Glider was put into a nose high attitude for correction and the weak link in the tow line separated. Glider stalled, rt wing dropped and acft contacted the terrain.Oct 6, 1984 · N2616H · DestroyedNTSB LAX84LA052Accident · No injuriesLimited investigationFinal reportSchweizer SGS 2-33A · Fremont, CAAfter receiving an aero tow to 3,000 ft MSL & being released 5 mi from the departure arpt, the plt thermaled for about 5 min. He then descended to 2,300 ft MSL & turned back toward the arpt. He encountered 'heavy sink' had insufficient altitude to reach the…Nov 11, 1983 · N1239S · Substantial damageNTSB ATL83LA266Accident · Minor injuriesLimited investigationFinal reportSchweizer SGS-2-33A · Warrenton, VAThe pilot collided with a tree while landing in windy conditions. The pilot had flown one dual flt on this day and then went up for a 39 minute solo flt. Upon her return she was low on downwind so she made a close in base but drifted to theright on final in…Jul 9, 1983 · N2743H · Substantial damage